X9318数据手册集成电路（IC）的数字电位计规格书PDF

描述 Description

The Intersil X9318 is a digitally controlled potentiometer (XDCP). The device consists of a resistor array, wiper switches, a control section, and nonvolatile memory. The wiper position is controlled by a 3-wire interface. The potentiometer is implemented by a resistor array composed of 99 resistive elements and a wiper switching network. Between each element and at either end are tap points accessible to the wiper terminal. The position of the wiper element is controlled by the CS, U/D, and INC inputs. The position of the wiper can be stored in nonvolatile memory and then be recalled upon a subsequent power-up operation. The device can be used as a three-terminal potentiometer for voltage control or as a two-terminal variable resistor for current control in a wide variety of applications.

特性 Features

• Solid-state potentiometer
• 3-wire serial interface
• Terminal voltage, 0 to +8V
• 100 wiper tap points
• Wiper position stored in nonvolatile memory and recalled on power-up
• 99 resistive elements
• Temperature compensated
• End to end resistance range ± 20%
• Low power CMOS
• VCC = 5V
• Active current, 3mA max.
• Standby current, 1mA max.
• High reliability
• Endurance, 100,000 data changes per bit
• Register data retention, 100 years
• RTOTAL value = 10kΩ
• Packages
• 8 Ld SOIC and DIP
• Pb-free plus anneal available (RoHS compliant)

应用 Application

• LCD bias control
• DC bias adjustment
• Gain and offset trim
• Laser diode bias control
• Voltage regulator output control